The correct answer is option 3, "Liberty, equality and fraternity." This slogan encapsulated the ideals and goals of the French Revolution.

Option 1, "One nation, one leader, and one flag," reflects a more authoritarian and nationalistic ideology, which was not the aim of the French Revolution.

Option 2, "Government of the people, by the people, and for the people," is actually a famous quote from Abraham Lincoln`s Gettysburg Address during the American Civil War. It does not directly relate to the slogan of the French Revolution.

Option 4, "None of these," is incorrect as the French Revolution did have a defining slogan that represented its principles and aspirations.